Inventory Management system web and mobile app

I am looking for a senior fullstack developer that can finish an end to end project for inventory management system.
There are multiple modules to the system that will be described to you in details once you are awarded. However, here is a summary of how the app functions:
– Integrate with a current Project management tool through API to pull the list of projects and info.
– Project info editer and BoQ builder module.
– Inventory requirements module based on each project info, create an automated supply schedules based on a customizable admin flow.
– Module to track, POs, orders, and deliveries
– Inventory Transactions module to track what was received and delivered.
– Operations module to build a test a questionnaire and confirm delivered vs installed material.
– Quotations and invoicing module
– Reporting and exporting module.
– All screen designs should be included
All functions need to work on a web interface. Some functions need to work on a Mobile app
You need to be able to build this app as follows:
– Frontend- React
– Backend: DotNET 6 C#
– Database: PostgreSQL